58 bis architectes
58 bis architectes is a Thonon-les-Bains, France-based architecture firm founded in 2005 specializing in bioclimatic design for schools, social housing, municipal buildings, and luxury residences across the Auvergne-Rhône-Alpes region.
- Company typePrivate
- Founded2005
- HeadquartersThonon-les-bains, France
- Headcount—
- GTM typeB2B
- OfferingServices
What 58 bis architectes does
58 bis architectes is a French architecture firm founded in 2005 and headquartered at 58 bis avenue de Genève, Thonon-les-Bains, in the Haute-Savoie department of the Auvergne-Rhône-Alpes region. The firm provides architectural design services across residential, public, educational, commercial, and specialized residential typologies, with a documented portfolio of more than 100 projects spanning 2005 to 2026. Its core technical competencies center on bioclimatic and eco-responsible design, including mixed wood/concrete construction systems, geothermal heating integration, and compliance with French thermal and environmental standards (RT2012, RE2020, BBC, Minergie) under the QEB (Qualité Environnementale du Bâtiment) methodology. Distinctive design elements include oasis courtyards for schools, hand-molded dark brick facades for commercial clients, and wood-structured technical buildings.
The firm serves four primary customer segments: (1) municipal and public sector clients (multiple mairies including Thonon-les-Bains, Évian, Publier, Chens-sur-Léman, Loisin, Lugrin) procuring schools, libraries, community halls, municipal technical centers, and sports facilities; (2) social housing organizations (organismes HLM, notably Léman Habitat and Haute-Savoie Habitat) for affordable multi-family housing; (3) property developers (BDP Marignan, EDELIS, TERACTEM) for residential and mixed-use developments; and (4) affluent private individuals commissioning luxury villas around Lake Geneva (Lac Léman). Notable commissions include the €11M Centre Technique Municipal de Thonon-les-Bains, the Quartier Les Tours in Évian (122 ownership and 44 social units, 12,000m²), and the Médiathèque et Périscolaire de Chens-sur-Léman (€3.873M, competition winner December 2024).
The business model is a fee-for-service professional services practice generating revenue through project commissions under French architecture fee structures (loi MOP, missions classiques including ESQ, APS, APD, PRO through AOR). The go-to-market is sales-led and acquisition is driven by two channels: (1) public architectural competitions (concours) for municipal and social housing clients, and (2) direct commissions from private developers, corporates, and individuals. The firm is founder-owned and led by architects L. Rizzolio and Y. Forel, operating as a boutique practice that collaborates with a network of regional engineering and landscape partners (CIL, Projectec, ECODIMO, ESBA, Canopée, Atelier Paysager). There are no disclosed investors, no subsidiaries, and no revenue disclosed; operations are confined to France with no apparent international footprint or digital/technology product beyond the portfolio website.
58 bis architectes firmographics
Firmographics- Name
- 58 bis architectes
- Legal name
- 58 bis Architectes
- Website
- https://58bisarchitectes.fr
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Short description
- 58 bis architectes is a Thonon-les-Bains, France-based architecture firm founded in 2005 specializing in bioclimatic design for schools, social housing, municipal buildings, and luxury residences across the Auvergne-Rhône-Alpes region.
- Ownership category
- akta.pro rank
58 bis architectes industry classification
Industry- Product category
- Architectural Design Services
- NAICS
- Architectural Services (541310), Architectural, Engineering, and Related Services (5413)
- SIC
- Services-Engineering Services (8711)
- akta.pro primary industry
- Architectural Design Services (BPAHAKAA)
- akta.pro secondary industries
- Multi-Family Residential Construction (Apartments, Condos, Townhomes) (IMAFABAB), Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Retail & Mixed-Use Commercial Construction (IMAFACAB)
Keywords
Where 58 bis architectes is headquartered
LocationHeadquarters
- HQ city
- Thonon-les-bains
- HQ country
- France
- HQ region
- Europe
Offices1 record
Markets served
58 bis architectes business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Architecture and Design Services: The firm generates revenue through professional architecture and design services for public and private clients. Projects span new construction, renovation, and extension work. Revenue is project-based, typically invoiced at agreed milestones per French architecture fee conventions (loi MOP or honoraires d'architectes). No recurring or subscription revenue streams are indicated.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
58 bis architectes product offering
Product offeringCore offering
58 bis architectes provides professional architecture and design services for new construction, renovation, and extension projects across residential, public, educational, and commercial buildings. Services cover the full French loi MOP project lifecycle (ESQ through AOR phases) and span municipal facilities (schools, libraries, community halls), social and market-rate housing, corporate and commercial headquarters, and high-end private villas. The practice is characterised by bioclimatic design, eco-responsible construction (wood and mixed wood/concrete systems), and compliance with French energy and environmental standards (RT2012, RE2020, BBC, Minergie, QEB).
Product overview
58 bis Architectes is a traditional architectural firm based in Thonon-les-Bains, France, specializing in the design and construction of diverse building projects across the Haute-Savoie region. The firm does not operate a technology platform or SaaS product; instead, their 'products and services' are architectural projects delivered for clients. Their portfolio spans residential developments (villas, housing complexes, social housing), public facilities (schools, nurseries, libraries, community halls, fire stations, sports facilities), commercial buildings (offices, medical centers), and specialized facilities (care homes, housing centers). Projects are predominantly located around Lake Geneva (Lac Léman) area including Thonon-les-Bains, Evian, Sciez, Publier, and surrounding communes. The firm's architectural approach emphasizes bioclimatic design, sustainable materials (particularly wood and mixed wood/concrete construction), and environmental quality (QEB approach). Each project is a unique commission tailored to client specifications, with no standardized product lines or modules.
Differentiator
Problem solved
Functional benefit
Products and services
- Educational Facility Architectural Design (Schools, Nurseries, After-school Centers) End-to-end architectural design of new and restructured school complexes, nurseries, and after-school centres for French municipalities, incorporating bioclimatic design, mixed wood/concrete construction, and QEB environmental quality methodology.
- Social and Affordable Housing Architectural Design Architectural design of social rental and shared-equity (accession) housing residences for HLM operators such as Léman Habitat, with high thermal performance, eco-district integration, and cost-effective construction within social housing budgets.
- Mixed-Use and Collective Housing Development Architectural Design (for property developers) Architectural design of multi-unit residential and mixed-use developments for property developers (promoteurs) such as BDP Marignan, EDELIS, and TERACTEM, including eco-district master planning, collective housing, and ground-floor commercial integrations.
- Municipal, Cultural, and Public Infrastructure Architectural Design Architectural design of municipal buildings, libraries, community halls, market halls, sports facilities, fire stations, and technical centres for French municipalities, including the Centre Technique Municipal de Thonon and Médiathèque de Chens-sur-Léman.
- Commercial Office and Professional Services Headquarters Architectural Design Architectural design of corporate headquarters, office buildings, medical centres, and artisan activity buildings for private professional firms and commercial clients, with distinctive material expressions such as the hand-moulded dark brick base used for the Fillon Billaud headquarters.
- Luxury Private Residential Architectural Design (Villas and Chalets) Bespoke architectural design of high-end private villas, lakefront properties, and chalets for affluent individuals in the Lac Léman and Haute-Savoie region, integrating luxury amenities (mirror pools, lifts) with landscape views and coastal planning compliance.
- Specialised Facility Architectural Design (Care Homes, Foyers, Medicalised Centres) Architectural design of specialised residential and care facilities including medicalised reception centres, life assistance foyers, housing and stabilisation centres, and support residences for associations such as APEI.
Quantifiable outcome
- Won multiple public tender competitions (concours) including Résidence les Allobroges (Publier, €2.835M), Médiathèque Chens-sur-Léman (€3.873M, Dec 2024), Les Roseaux Veigy (€4.31M, May 2024)
- +2 more outcomes
Companies that use 58 bis architectes
Customer profileNamed customers11 records
Segments5 records
Ideal customer profiles5 records
58 bis architectes technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
58 bis architectes partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered minor.
- CILminorCIL provides economist, structure, and VRD engineering for the Médiathèque et Périscolaire de Chens-sur-Léman (competition winner December 2024, €3.873M). Also collaborates on the Salle des Fêtes de Publier project.
- Canopée (landscape architecture)minorCanopée provides landscape architecture for Les Roseaux social residence project in Veigy (competition winner May 2024, €4.31M), supporting the bioclimatic and biodiversity objectives of the residential project.
- Atelier PaysagerminorAtelier Paysager is the landscape architect for the Groupe Scolaire des Hauts d'Évian competition entry (2022). They contribute to the 'oasis courtyard' concept and overall site landscaping design for the school project.
- Atelier Info GraphiqueminorAtelier Info Graphique provides perspective and visualization rendering services for competition entries including Groupe Scolaire des Hauts d'Évian and Quartier Les Tours (Évian). They create the visual representations needed for competition submissions.
- cabinet Orlando MapelliminorOrlando Mapelli serves as the economist (économiste) on multiple 58 bis Architectes projects, including the Siège social Fillon Billaud (2019) and the Groupe Scolaire des Grands Prés, Sciez (€8.9M). The firm provides cost estimation and project economics consulting as part of the design team.
- ProjectecminorProjectec is the thermician (BET Fluides/thermal studies) on multiple 58 bis Architectes projects including the Fillon Billaud headquarters, Résidence les Allobroges, and Groupe Scolaire de Loisin. They provide HVAC and thermal engineering design services.
- CIL (Construction Ingénierie Leadership)minorCIL provides structural engineering studies (études structures) for 58 bis Architectes projects including the Fillon Billaud headquarters and the Médiathèque de Chens-sur-Léman. Based in Haute-Savoie, CIL provides local structural engineering expertise.
- Idlia StudiominorIdlia Studio (www.idlia.fr) provides 3D visualization and infographics for competition and project presentation materials, as seen in the Villa F and Groupe Scolaire de Perrignier projects.
- Poup'ArtminorPoup'Art provides competition visualization and image services for several 58 bis Architectes projects including Résidence les Allobroges, Groupe scolaire de Lugrin, and Villa Paradisio.
Scale indicators3 records
Recent moves5 records
Expansion highlights4 records
58 bis architectes competitors and assessment
Company assessmentDirect peers
- Atelier d'Architecture Philippe Madec: Paris-based architecture practice recognized for bioclimatic, sustainable, and environmentally responsible design across housing, public facilities, and urban projects. Highly comparable to 58 bis Architectes' eco-responsible positioning and mixed-material construction expertise.
- Tectoniques Architectes: Rhône-Alpes-based practice (Saint-Étienne) with strong focus on social housing, educational facilities, and bioclimatic design. Comparable scale and end-market overlap, also competing in concours publics across France.
- AIA Life Designers: Multi-disciplinary French architecture firm specializing in healthcare, education, residential, and public-sector projects with regional offices in Lyon and elsewhere. Operates in similar public-tender markets and shares a client base focused on French public-sector construction.
- Patriarche: Lyon-area architecture group with comparable presence in residential, social housing, and commercial projects across the Auvergne-Rhône-Alpes region. Competes directly for regional concours and developer commissions.
- Atelier PO² (PO2 Architectes): French practice focused on social housing, public facilities, and eco-responsible design — directly overlapping with 58 bis' public-sector competition wins and sustainable-design methodology.
- Construire: Regional French architecture firm with portfolio in social housing, public facilities, and mixed-use projects across France. Compares as a similarly sized practice competing for the same developers (HLM) and municipal clients.
Broad incumbents
- Architecture-Studio: Large Paris-headquartered multi-office practice with presence across commercial, public, residential, and international projects. Operates broadly in the same concours publics market as 58 bis but at meaningfully greater scale and geographic reach.
- Wilmotte & Associés: Paris-based architecture firm with wide-ranging portfolio across cultural, residential, and commercial projects in France and abroad. Competes indirectly for premier public tenders and high-end private commissions in the same client universe.
- Jean-Paul Viguier et Associés: Established French practice with corporate headquarters, large-scale residential, and mixed-use developments. A broader incumbent competing on the same premium developer-led project category as 58 bis.
- Valode & Pistre: Major French architecture firm with broad portfolio in housing, public facilities, and urban districts. Comparable expertise on large-scale mixed-use and eco-district master planning projects.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat3 records
Key risks6 records
Key highlights7 records
Customer concentration
58 bis architectes social profiles
Digital presence58 bis architectes financial estimates
Financial estimateRevenue estimate
Valuation estimate
58 bis architectes leadership team
Management profileNumber of profiles
Profiles2 records
58 bis architectes funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
58 bis architectes M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about 58 bis architectes
What does 58 bis architectes do?
58 bis architectes provides professional architecture and design services for new construction, renovation, and extension projects across residential, public, educational, and commercial buildings. Services cover the full French loi MOP project lifecycle (ESQ through AOR phases) and span municipal facilities (schools, libraries, community halls), social and market-rate housing, corporate and commercial headquarters, and high-end private villas. The practice is characterised by bioclimatic design, eco-responsible construction (wood and mixed wood/concrete systems), and compliance with French energy and environmental standards (RT2012, RE2020, BBC, Minergie, QEB).
Is 58 bis architectes a public or private company?
58 bis architectes is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was 58 bis architectes founded?
58 bis architectes was founded in 2005.
Where is 58 bis architectes based?
58 bis architectes is headquartered in Thonon-les-bains, France, in the Europe region.
How does 58 bis architectes make money?
One revenue line is on record: architecture and Design Services.
Who are 58 bis architectes's main competitors?
Direct peers on record are Atelier d'Architecture Philippe Madec, Tectoniques Architectes, AIA Life Designers, Patriarche, Atelier PO² (PO2 Architectes) and Construire. Broad incumbents are Architecture-Studio, Wilmotte & Associés, Jean-Paul Viguier et Associés and Valode & Pistre.
Does 58 bis architectes have an API?
No public API is recorded for 58 bis architectes.
What industry is 58 bis architectes in?
58 bis architectes's product category is Architectural Design Services. Its primary akta.pro industry code is BPAHAKAA, Architectural Design Services, with a secondary code of IMAFABAB, Multi-Family Residential Construction (Apartments, Condos, Townhomes). Its NAICS code is 541310 and its SIC code is 8711.